2005 sonata abs light

abs light came on scan tool says there is no codes anyone have any ideas I was driving in snow and tires were slipping going up hill and abs light came on can't get it to shut off 2005 sonata 2.4

Not all scan tools are capable of reading ABS codes. Is your's?

You can try resetting the ECM by disconnecting the battery Negative wire for 5 min or so (maybe even longer).
Afterwards the car may run a little off for a bit as the EFI ECM might need to re-learn some data.